topjohnwu/ndk-busybox
1
0
Fork 0
mirror of https://github.com/topjohnwu/ndk-busybox.git synced 2024-12-11 13:35:00 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity
75d151e31d
ndk-busybox/archival/rpm.c
Denys Vlasenko 4eed2c6c50 Update menuconfig items with approximate applet sizes 
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-07-18 22:01:24 +02:00

406 lines
12 KiB
C
Raw Blame History

/* vi: set sw=4 ts=4: */
/*
* Mini rpm applet for busybox
*
* Copyright (C) 2001,2002 by Laurence Anderson
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//config:config RPM
//config: bool "rpm (33 kb)"
//config: default y
//config: help
//config: Mini RPM applet - queries and extracts RPM packages.
//applet:IF_RPM(APPLET(rpm, BB_DIR_BIN, BB_SUID_DROP))
//kbuild:lib-$(CONFIG_RPM) += rpm.o
//usage:#define rpm_trivial_usage
//usage: "-i PACKAGE.rpm; rpm -qp[ildc] PACKAGE.rpm"
//usage:#define rpm_full_usage "\n\n"
//usage: "Manipulate RPM packages\n"
//usage: "\nCommands:"
//usage: "\n -i Install package"
//usage: "\n -qp Query package"
//usage: "\n -qpi Show information"
//usage: "\n -qpl List contents"
//usage: "\n -qpd List documents"
//usage: "\n -qpc List config files"
#include "libbb.h"
#include "common_bufsiz.h"
#include "bb_archive.h"
#include "rpm.h"
#define RPM_CHAR_TYPE 1
#define RPM_INT8_TYPE 2
#define RPM_INT16_TYPE 3
#define RPM_INT32_TYPE 4
/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
#define RPM_STRING_TYPE 6
#define RPM_BIN_TYPE 7
#define RPM_STRING_ARRAY_TYPE 8
#define RPM_I18NSTRING_TYPE 9
#define TAG_NAME 1000
#define TAG_VERSION 1001
#define TAG_RELEASE 1002
#define TAG_SUMMARY 1004
#define TAG_DESCRIPTION 1005
#define TAG_BUILDTIME 1006
#define TAG_BUILDHOST 1007
#define TAG_SIZE 1009
#define TAG_VENDOR 1011
#define TAG_LICENSE 1014
#define TAG_PACKAGER 1015
#define TAG_GROUP 1016
#define TAG_URL 1020
#define TAG_PREIN 1023
#define TAG_POSTIN 1024
#define TAG_FILEFLAGS 1037
#define TAG_FILEUSERNAME 1039
#define TAG_FILEGROUPNAME 1040
#define TAG_SOURCERPM 1044
#define TAG_PREINPROG 1085
#define TAG_POSTINPROG 1086
#define TAG_PREFIXS 1098
#define TAG_DIRINDEXES 1116
#define TAG_BASENAMES 1117
#define TAG_DIRNAMES 1118
#define RPMFILE_CONFIG (1 << 0)
#define RPMFILE_DOC (1 << 1)
enum rpm_functions_e {
rpm_query = 1,
rpm_install = 2,
rpm_query_info = 4,
rpm_query_package = 8,
rpm_query_list = 16,
rpm_query_list_doc = 32,
rpm_query_list_config = 64
};
typedef struct {
uint32_t tag; /* 4 byte tag */
uint32_t type; /* 4 byte type */
uint32_t offset; /* 4 byte offset */
uint32_t count; /* 4 byte count */
} rpm_index;
struct globals {
void *map;
rpm_index **mytags;
int tagcount;
} FIX_ALIASING;
#define G (*(struct globals*)bb_common_bufsiz1)
#define INIT_G() do { setup_common_bufsiz(); } while (0)
static void extract_cpio(int fd, const char *source_rpm)
{
archive_handle_t *archive_handle;
if (source_rpm != NULL) {
/* Binary rpm (it was built from some SRPM), install to root */
xchdir("/");
} /* else: SRPM, install to current dir */
/* Initialize */
archive_handle = init_handle();
archive_handle->seek = seek_by_read;
archive_handle->action_data = data_extract_all;
#if 0 /* For testing (rpm -i only lists the files in internal cpio): */
archive_handle->action_header = header_list;
archive_handle->action_data = data_skip;
#endif
archive_handle->ah_flags = ARCHIVE_RESTORE_DATE | ARCHIVE_CREATE_LEADING_DIRS
/* compat: overwrite existing files.
* try "rpm -i foo.src.rpm" few times in a row -
* standard rpm will not complain.
*/
| ARCHIVE_REPLACE_VIA_RENAME;
archive_handle->src_fd = fd;
/*archive_handle->offset = 0; - init_handle() did it */
setup_unzip_on_fd(archive_handle->src_fd, /*fail_if_not_compressed:*/ 1);
while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
continue;
}
static rpm_index **rpm_gettags(int fd, int *num_tags)
{
/* We should never need more than 200 (shrink via realloc later) */
rpm_index **tags = xzalloc(200 * sizeof(tags[0]));
int pass, tagindex = 0;
xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
/* 1st pass is the signature headers, 2nd is the main stuff */
for (pass = 0; pass < 2; pass++) {
struct rpm_header header;
rpm_index *tmpindex;
int storepos;
xread(fd, &header, sizeof(header));
if (header.magic_and_ver != htonl(RPM_HEADER_MAGICnVER))
return NULL; /* Invalid magic, or not version 1 */
header.size = ntohl(header.size);
header.entries = ntohl(header.entries);
storepos = xlseek(fd, 0, SEEK_CUR) + header.entries * 16;
while (header.entries--) {
tmpindex = tags[tagindex++] = xmalloc(sizeof(*tmpindex));
xread(fd, tmpindex, sizeof(*tmpindex));
tmpindex->tag = ntohl(tmpindex->tag);
tmpindex->type = ntohl(tmpindex->type);
tmpindex->count = ntohl(tmpindex->count);
tmpindex->offset = storepos + ntohl(tmpindex->offset);
if (pass == 0)
tmpindex->tag -= 743;
}
storepos = xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
/* Skip padding to 8 byte boundary after reading signature headers */
if (pass == 0)
xlseek(fd, (-storepos) & 0x7, SEEK_CUR);
}
/* realloc tags to save space */
tags = xrealloc(tags, tagindex * sizeof(tags[0]));
*num_tags = tagindex;
/* All done, leave the file at the start of the gzipped cpio archive */
return tags;
}
static int bsearch_rpmtag(const void *key, const void *item)
{
int *tag = (int *)key;
rpm_index **tmp = (rpm_index **) item;
return (*tag - tmp[0]->tag);
}
static int rpm_getcount(int tag)
{
rpm_index **found;
found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
if (!found)
return 0;
return found[0]->count;
}
static char *rpm_getstr(int tag, int itemindex)
{
rpm_index **found;
found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
if (!found || itemindex >= found[0]->count)
return NULL;
if (found[0]->type == RPM_STRING_TYPE
|| found[0]->type == RPM_I18NSTRING_TYPE
|| found[0]->type == RPM_STRING_ARRAY_TYPE
) {
int n;
char *tmpstr = (char *) G.map + found[0]->offset;
for (n = 0; n < itemindex; n++)
tmpstr = tmpstr + strlen(tmpstr) + 1;
return tmpstr;
}
return NULL;
}
static int rpm_getint(int tag, int itemindex)
{
rpm_index **found;
char *tmpint;
/* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
* it's ok to ignore it because tag won't be used as a pointer */
found = bsearch(&tag, G.mytags, G.tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
if (!found || itemindex >= found[0]->count)
return -1;
tmpint = (char *) G.map + found[0]->offset;
if (found[0]->type == RPM_INT32_TYPE) {
tmpint += itemindex*4;
return ntohl(*(int32_t*)tmpint);
}
if (found[0]->type == RPM_INT16_TYPE) {
tmpint += itemindex*2;
return ntohs(*(int16_t*)tmpint);
}
if (found[0]->type == RPM_INT8_TYPE) {
tmpint += itemindex;
return *(int8_t*)tmpint;
}
return -1;
}
static void fileaction_dobackup(char *filename, int fileref)
{
struct stat oldfile;
int stat_res;
char *newname;
if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
/* Only need to backup config files */
stat_res = lstat(filename, &oldfile);
if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
/* File already exists - really should check MD5's etc to see if different */
newname = xasprintf("%s.rpmorig", filename);
copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
free(newname);
}
}
}
static void fileaction_setowngrp(char *filename, int fileref)
{
/* real rpm warns: "user foo does not exist - using <you>" */
struct passwd *pw = getpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
int uid = pw ? pw->pw_uid : getuid(); /* or euid? */
struct group *gr = getgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
int gid = gr ? gr->gr_gid : getgid();
chown(filename, uid, gid);
}
static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
{
int count = 0;
while (rpm_getstr(filetag, count)) {
char* filename = xasprintf("%s%s",
rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
rpm_getstr(TAG_BASENAMES, count));
fileaction(filename, count++);
free(filename);
}
}
int rpm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int rpm_main(int argc, char **argv)
{
int opt, func = 0;
const unsigned pagesize = getpagesize();
while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
switch (opt) {
case 'i': /* First arg: Install mode, with q: Information */
if (!func) func = rpm_install;
else func |= rpm_query_info;
break;
case 'q': /* First arg: Query mode */
if (func) bb_show_usage();
func = rpm_query;
break;
case 'p': /* Query a package */
func |= rpm_query_package;
break;
case 'l': /* List files in a package */
func |= rpm_query_list;
break;
case 'd': /* List doc files in a package (implies list) */
func |= rpm_query_list;
func |= rpm_query_list_doc;
break;
case 'c': /* List config files in a package (implies list) */
func |= rpm_query_list;
func |= rpm_query_list_config;
break;
default:
bb_show_usage();
}
}
argv += optind;
//argc -= optind;
if (!argv[0]) {
bb_show_usage();
}
while (*argv) {
int rpm_fd;
unsigned mapsize;
const char *source_rpm;
rpm_fd = xopen(*argv++, O_RDONLY);
G.mytags = rpm_gettags(rpm_fd, &G.tagcount);
if (!G.mytags)
bb_error_msg_and_die("error reading rpm header");
mapsize = xlseek(rpm_fd, 0, SEEK_CUR);
mapsize = (mapsize + pagesize) & -(int)pagesize;
/* Some NOMMU systems prefer MAP_PRIVATE over MAP_SHARED */
G.map = mmap(0, mapsize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
//FIXME: error check?
source_rpm = rpm_getstr(TAG_SOURCERPM, 0);
if (func & rpm_install) {
/* Backup any config files */
loop_through_files(TAG_BASENAMES, fileaction_dobackup);
/* Extact the archive */
extract_cpio(rpm_fd, source_rpm);
/* Set the correct file uid/gid's */
loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
}
else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
if (!(func & (rpm_query_info|rpm_query_list))) {
/* If just a straight query, just give package name */
printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
}
if (func & rpm_query_info) {
/* Do the nice printout */
time_t bdate_time;
struct tm *bdate_ptm;
char bdatestring[50];
const char *p;
printf("%-12s: %s\n", "Name" , rpm_getstr(TAG_NAME, 0));
/* TODO compat: add "Epoch" here */
printf("%-12s: %s\n", "Version" , rpm_getstr(TAG_VERSION, 0));
printf("%-12s: %s\n", "Release" , rpm_getstr(TAG_RELEASE, 0));
/* add "Architecture" */
printf("%-12s: %s\n", "Install Date", "(not installed)");
printf("%-12s: %s\n", "Group" , rpm_getstr(TAG_GROUP, 0));
printf("%-12s: %d\n", "Size" , rpm_getint(TAG_SIZE, 0));
printf("%-12s: %s\n", "License" , rpm_getstr(TAG_LICENSE, 0));
/* add "Signature" */
printf("%-12s: %s\n", "Source RPM" , source_rpm ? source_rpm : "(none)");
bdate_time = rpm_getint(TAG_BUILDTIME, 0);
bdate_ptm = localtime(&bdate_time);
strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate_ptm);
printf("%-12s: %s\n", "Build Date" , bdatestring);
printf("%-12s: %s\n", "Build Host" , rpm_getstr(TAG_BUILDHOST, 0));
p = rpm_getstr(TAG_PREFIXS, 0);
printf("%-12s: %s\n", "Relocations" , p ? p : "(not relocatable)");
/* add "Packager" */
p = rpm_getstr(TAG_VENDOR, 0);
printf("%-12s: %s\n", "Vendor" , p ? p : "(none)");
printf("%-12s: %s\n", "URL" , rpm_getstr(TAG_URL, 0));
printf("%-12s: %s\n", "Summary" , rpm_getstr(TAG_SUMMARY, 0));
printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
}
if (func & rpm_query_list) {
int count, it, flags;
count = rpm_getcount(TAG_BASENAMES);
for (it = 0; it < count; it++) {
flags = rpm_getint(TAG_FILEFLAGS, it);
switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
case rpm_query_list_doc:
if (!(flags & RPMFILE_DOC)) continue;
break;
case rpm_query_list_config:
if (!(flags & RPMFILE_CONFIG)) continue;
break;
case rpm_query_list_doc|rpm_query_list_config:
if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
break;
}
printf("%s%s\n",
rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
rpm_getstr(TAG_BASENAMES, it));
}
}
}
munmap(G.map, mapsize);
free(G.mytags);
close(rpm_fd);
}
return 0;
}
Reference in New Issue View Git Blame Copy Permalink